Abstract
A Mg-13Li-4Si-lAg (wt pct) alloy with improved ductility and thermal stability was developedvia the rapid solidification (RS) processing technique. Silicon was added to the alloy as the third alloying element in order to form a thermally stable intermetallic dispersoid phase required for improved mechanical properties at ambient and elevated temperatures. The microstructure of the as-spun and heat-treated alloy was characterized using differential scanning calorimetry (DSC), X-ray diffraction, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Microhardness measurements were conducted on as-spun and heat-treated alloy in order to obtain qualitative prop-erty data and to investigate the extent of the degradation of properties at elevated temperatures. It was found that the melt-spun Mg-Li alloy possessed a microstructure consisting of a fine dispersion of Mg2Si phase in a fine-grained body-centered cubic (bcc) Mg-Li solid solution, resulting in the desired improvements in thermal stability and mechanical properties.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
P.D. Frost:Magnesium-Lithium Alloys: A Review of Current Developments, Defense Metals Information Center Memorandum 146, Batteile Memorial Institute, (Columbus, OH), 1962.
W.R.D. Jones and G.V. Hogg:J. Inst. Met., 1957, vol. 85, pp. 255- 261.
J.B. Clark and L. Sturkey:J. Inst. Met., 1958, vol. 86, pp. 272–276.
G.V. Raynor and J.R. Kench:J. Inst. Met., 1960, vol. 88, pp. 209–216.
J.C. McDonald:J. Inst. Met., 1969, vol. 97, pp. 353–362.
A. Alamo and A.D. Banchik:J. Mater. Sci., 1980, vol. 15, pp. 222- 229.
S. Das and H.L. Fraser:Lightweight Alloys for Aerospace Applications, TMS Proc, TMS, Warrendale, PA, 1989, pp. 151–168.
H. Gjestland, G. Nussbaum, and G. Regazzoni:Lightweight Alloys for Aerospace Applications, TMS Proc, TMS, Warrendale, PA, 1989, pp. 138–149.
M. Cohen, B.H. Kear, and R. Mehrabian:Rapid Solidification Processing: Principles and Technologies, II, Proc. 2nd Int. Conf. on Rapid Solidification Processing, Claritor's Publishing (Baton Rouge, LA), 1980, pp. 139–157.
Author information
Authors and Affiliations
Additional information
Formerly Graduate Student, Department of Materials Science and Engineering, University of California
Rights and permissions
About this article
Cite this article
Matsuda, A., Wan, C.C., Yang, J.M. et al. Rapid solidification processing of a Mg-Li-Si-Ag alloy. Metall Mater Trans A 27, 1363–1370 (1996). https://doi.org/10.1007/BF02649873
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02649873